DIGESTIVE DISEASE CENTER | Gastroenterology home | Surgery home

Patient care — diagnostic tools, tests, procedures

Ambulatory Esophageal pH (acid) monitoring - A probe can be placed via the nose into the esophagus to record the level of acidity in the lower esophagus. Because some degree of variation in acidity is normal, and small reflux events are relatively common, such monitors must be left in place for at least a 24-hour period to confirm the diagnosis of GERD. The test is particularly useful when the patient's symptoms can be correlated to episodes of increased esophageal acidity.

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